JPSO said the woman called 911 about 3:30 a.m. and reported she had been shot in the head. When deputies arrived, they found her and the three bodies. The victims were all older than 30.

The woman was taken to the hospital, JPSO said. Her condition wasn't immediately available.

Authorities said the killings happened at an apartment complex on Pasadena Avenue between South Interstate 10 Service Road and West Napoleon Avenue. Crime scene tape was put up outside an apartment building on the block and at least 15 JPSO vehicles were at the scene, according to WVUE Fox 8.

Investigators were using flashlights to look at vehicles parked in front of the building and were combing the area looking for surveillance video, Fox 8 said. A coroner van was at the scene to remove the bodies of the deceased victims.

Authorities told Fox 8 they believe the shooter entered the apartment, shot the four victims and left.

No more information was immediately available, including details about a possible motive or a potential suspect. Check back to NOLA.com for more details as they emerge.